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Geophysical and Geological Features of the Meso-Cenozoic Lower Yangtze Rift Zone

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Acta Geologica Sinica(English Edition) 1990年第4期64卷 363-378页

作者： Chen Shengzao institute of Geophysics, State {1. {2., Beijing Zhu Lupei institute of Geophysics State Seismological Bureau Beijing

It is clarified in this paper that the Lower Yangtze depression is a Meso-Cenozoic rift zone formed on thebasement of the Hercynian-Indosinian foreland basins. The rift zone is divided into eastern and western sectorsand is different in northern and southern parts. The rift zone in plane combination comprises *** or splitting rifts. The North Jiangsu-South Yellow Sea region represents a 'drift-type' rift basinwhose deposition center migrates gradually castward. The formation mechanism and dynamic evolution of therift basin are discussed from a viewpoint of the crustal fine-structure, with evidence in geology and geophysicsand analysis results of dynamic forces given.

关键词： Geophysical and Geological Features of the Meso-Cenozoic Lower Yangtze Rift Zone

Contemporary crustal movement of continental China obtained by global positioning system(GPS) measurements

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Chinese Science Bulletin 2001年第18期46卷 1552-1554,1588页

作者： MA Zongjin, CHEN Xinlian, YE Shuhua, LAI Xian, WEI Ziqing, CHEN Junrong, NING Jinsheng, XU Huoze & DING Guoyu1. Insitute of geology, China {1. {2., Beijing 1.002., China (e-mail: disgroup@***)2. Center for Analysis and Prediction, China {1. {2., Beijing 1.0036, China 3. Shanghai Astronomic Observatory, Chinese Academy of Sciences, Shanghai 2.0030, China 4. institute of Seismology, China {1. {2., Wuhan 430077, China 5. institute of Survey and Mapping, Xi’an 71.054, China 6. National {2. of Survey and Mapping, Beijing 1.0830, China 7. Wuhan University, Wuhan 430077, China 8. institute of Geodesy and Geophysics, Wuhan 430077, China 9. China {1. {2., Beijing 1.0036, China Insitute of geology China Seismological Bureau Beijing China Center for Analysis and Prediction China Seismological Bureau Beijing China Shanghai Astronomic Observatory Chinese Academy of Sciences Shanghai China institute of Seismology China Seismological Bureau Wuhan China institute of Survey and Mapping Xi’an China National bureau of Survey and Mapping Beijing China Wuhan University Wuhan China institute of Geodesy and Geophysics Wuhan China China seismological {1. Beijing China

We obtain a unified horizontal velocity field of continental China and vicinity through measurements at 81.GPS stations provided by the National Key Infrastructure Project, Crustal Movement Observation Network of China. The velocity field delineates patterns of movements and deformation of active crustal blocks in continental China under the Eurasia-fixed reference frame. The space-based geodesy also clearly shows for the first time the horizontal movementand deformation of continental China induced by indentation of the Indian plate. The data provide kinematic constraints for simulating dynamic process of continental litho-spheric deformation.

关键词： crustal movement velocity field tectonic deformation.

THE GLOBAL TECTONIC SYSTEMS AND A LATITUDINAL MOUNTAIN-PLATEAU CHAIN ON THE NORTH HEMISPHERE

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地学前缘 2000年第S1期7卷 344-345页

作者： Ma Zongjin(institute of {1.,China {2. bureau,Beijing 1.002.,China)

Three global tectonic systems that formed since the middle Jurassic (1.0Ma ago)are outlined based on the global map of the Cenozoic and Mesozoic tectonics edited by Ma Zongjin et al.(1.96).They are the circum\|Pacific tectonic system,the mid\|ocean ridge tectonic system and the intra\|continental tectonic system of the north *** map shows that about 80% of the total length of the continental orogens are concentrate on the north hemisphere of the earth,of which a latitudinal mountain\|plateau chain occur within a zone between north latitude 2.°and 50°.Seismic and volcanic activities demonstrate that the intracontinental tectonic system on the north hemisphere is still *** distribution of the continental deep\|focus earthquakes and almost ultra high\|pressure rock found so far over the World,that are assumed both related to recent or previous deep subduction of continent,along with this *** latitudinal mountain\|plateau chain is subdivided into four active tectonic region of Qinghai—Xizang(Tibet),Iranian,eastern mediterranean and North American,both characterized by an individual similar mountain\|plateau\|basin structure with major active boundaries or controlling faults (Fig.1..These active regions are all close to primary dynamic boundaries of continent\|continent *** of source mechanisms shows that regional tectonic stress field in these regions are dominated by a nearly NS or NNE—SSW direction compression corresponding to a local plate motions and a global compressive *** between the formation of the continental latitudinal mountain\|plateau chain on north hemisphere and the oceanic plate tectonics is discussed using the information of the “Map of Magnetic Lineations of the World’s Ocean Basins (Cande et al.,1.89)”and the Cenozoic and Mesozoic tectonic evolution in the *** 49 accretion units formed during 6 accretion stages of the ocean spreading in three chief oceans (the Pacific,the India and th

关键词： global asymmetrical system geodynamics mountain\| plateau chain seismotectonic system latitudinal tectonic zone

Mass Extinction——A Fundamental Indicator for Major Natural Divisions of Geological History

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Acta Geologica Sinica(English Edition) 1988年第1期1卷 1-12页

作者： Xu Daoyi Zhang Qinwen Sun Yiyin institute of {1., State {2. bureau, Beijing institute of {1., Chinese Academy of Geological Sciences, Beijing institute of {1., Academia Sinica, Beijing institute of {1. State Seismological Bureau Beijing China

In the Phanerozoic, there are three major geological boundaries: Precambrian/***/Triassic and Cretaceous/Tertiary. Studies of these boundaries in China and over the world stronglysuggest that they have the following similar features: mass extinctions of many taxa, positive anomalies ofplatinum-group metals, and abrupt changes of stable isotopes (δ1.C). It is quite probable that these were theconsequences of some rare catastrophic events of extraterrestrial origin. Hence, the three above-mentionedmass extinction events may be regarded as key indicators for the division of the geological history of thePhanerozoic.

关键词： Mass Extinction A Fundamental Indicator for Major Natural Divisions of Geological History

The Crustal Structure and Seismic Activity in North China

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Acta Geologica Sinica(English Edition) 1989年第4期63卷 343-359,448-449页

作者： Feng Rui institute of Geophysics, State {1. {2., Beijing Huang Guifang, Zheng Shuzhen, Wang Jun, Yan Huifen Geophysical Prospecting Party, State {1. {2., Zhengzhou, Henan and Zhang Ruoshui {1. Technique College, State {1. {2., Yanjiao,Hebei institute of Geophysics State Seismological Bureau Beijing China

A layered crustal block model of North China has been constructed based on large amount of data from seismic sounding carried out in recent two decades. Some deep fault zones, such as the *** and Tancheng-Lujiang fault zones, divide the upper crust of North China into three upper crustal terranes and nine bolcks. There are distinct differences in velocity and depth distributions, which reflects Cenozoic block faulting in North China in the process of formation of the deep structure. The upper crust shows the features of transition in isostatic adjustment. The existence of a low-velocity layer in the middle crust is characteristic of the crustal structure in North China. There seems to be an increase of rheology of the rocks in the lower crust and a persistence of stable regional stress field. The patterns of the Moho on two sides of the Yanshan-Taihang Mountains are different. The relief of the Moho around Beijing, Shijiazhuang and Guangrao where the deep faults join together shows a quadrantal distribution in some degree. The dynamic sources for seismic activity are the NE-SW horizontal compression and the diapirism of the upper mantle. The middle and upper crust, especially the layered block structure has the most significant effects on seismicity, and the occurrence of earthquakes is more closely related to them than to the Moho.

关键词： The Crustal Structure and Seismic Activity in North China Activity

Experimental study on the P wave velocity in rocks from lower crust and crust-mantle transitional zone beneath the Hannuoha

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Progress in Natural Science:Materials International 2002年第12期 47-51页

作者： FAN Qicheng SUI Jianli ZHANG Hongfu ZHAI Mingguo and XIE Hongsen(1. institute of {1. and Geophysics, Chinese Academy of Sciences, Beijing 1.002., China {2., China Seismo logical bureau, Beijing 1.002., China 3. institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002. China)

Cenozoic basalt-borne mafic granulite-facies plagioclase pyroxenite and eclogite-facies garnet pyroxenite xenoliths from the Hannuoba, as well as nearby Archean terrain granulites, are selected for the experimental study on the P wave velocity at high temperature and high pressure in order to reveal the present-day compositional features for the lower crust and crust-mantle transitional zone. Results show that mafic xenoliths have high Vp(7.0 - 8.0 km/s), in contrast, the Archean terrain granulites have low Vp( <7. 0 km/s) ?High Vp mafic xenoliths can represent the present-day compositional features for the lower crust and crust-mantle transitional zone beneath the Hannuoba. This provides new evidence for the crust vertical growth and the formation of the crust-mantle transitional zone resulting from the magma underplating. Low Vp Archean granulite still remains the characteristics of the early lower crust.

关键词： lower crust and crust-mantle transitional zone mafic xenollth wave velocity Hannuoba.

LONGITUDINAL STREAM-PROFILES AS INDICATORS FOR GEOMETRIC SEGMENTATION OF THE LANGSHAN- HUANGBAISI FAULT ZONE, NORTHWEST BEIJING

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地震地质 1991年第4期 300-305+299页

作者： Cheng Shao-ping, Yang Gui-zhi and Yang Zhe(institute of {1., State {2. bureau, Beijing 1.002., China)

The Langshan-Huangbaisi fault zone in northwest Beijing is the southwestern part of the normal fault zone on the northern margin of the Yanqing basin, 35.5km long and NNE-NEE-trending in general, on which two major 1.0°- 1.0° bends separate it into three segments with different *** the Hack’s method, 71.longitudinal stream-profiles along the fault zone are analysed, shawing a well geomorphic response to the fault geometry. On these two major bends the gradient indices,K values, are relatively high. These three segments greatly differ in K *** stream-profiles are good tectonic-geomorphic indicators for geometric Segmentation of normal faults and will prqvide insight into segmented kinematics and paleoseismology.

关键词： Beijing Langshan-Huangbaisi fault zone Longitudinal stream-profile Geometric segmentatoin Gradient index

Deep Structures in China and Its Adjacent Areas: Plate Tectonics and Its Metallogenic Significance

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Acta Geologica Sinica(English Edition) 1995年第3期69卷 223-239页

作者： Chen Shengzao institute of Geophysics, State {1. {2., Beijing institute of Geophysics State Seismological Bureau Beijing

This paper proposes a new tectonic pattern of the deep-seated structures in China and its adjacent areas (including the T - A - B system of the Ryukyu Islands). This is based on studies of the gravity field and gravity inversion coupled with the summation of the most recent achievements in geophysical studies. From a plate-tectonic point of view, the metallogenic characteristics and their indications at depth, as well as relevant geophysical-geological characteristics of four tectonic environments of the Chinese continent are analysed, and a classification of composite metallogenic provinces and belts and prediction of metallogenic prospects are made. The author extends the Kunlun-Qilian-Qinling tectonic belt to the T-A-B system of the Ryukyu Islands through the NW deep boundary of the Hangzhou Bay, and also proposes the following basic views' the migration and superposition of tectonic environments led to the formation of a composite metallogenic system; the change in the tectonic environment resulted in the superposition of various types of mineral deposits; seismic activities and metallogeny are mutually inducing factors. These views will be helpful to a discussion on the tectonic environments and metallogenic regularities.

关键词： deep structure tectonic environment metallogeny

YANSHANIAN AND HIMALAYAN EVOLUTION OF THE WESTERN TARIM AREA(XINJIANG CHINA):FROM THE JURASSIC TROUGH UP TO THE NEOGENE AND QUATERNARY FLEXURAL BASIN

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地学前缘 2000年第S1期7卷 67-68页

作者： Joseph Canerot\+1.Qu Guosheng\+2.WT5,5”BX](1.Laboratorie de Dynamique des Bassins sédimentaires,Université Paul Sabatier,39,allées Jules Guesde 31.62.Toulouse cedex,France 2.Seismologic bureau of China,{1. of {2., Qijiahuozi,P.O.Box 634,

The Tarim Basin corresponds to a large sedimentary depression which separates (Yang et al.,1.96)the Tianshan belt to the North from the Kunlun—Pamir belt to the South (Fig.1.).Its western part can be divided into the following structural units,from North to South (Fig.1.):①Foreland belts of Southern *** involve Palaeozoic and Cenozoic sediments overlapping southward the Quaternary infilling of the basin (Dong Jia et al.,1.98);②Bachu NW\|SE oriented Uplift of Central Tarim. where NE dipping reverse faults crossing Palaeozoic and Cenozoic series can be found (Hendrix et al.,1.92.;③SW depression of Tarim Basin. filled up with thick (up to 1.000m),weakly deformed,post hercynian sediments;④Foreland belts of West Kunlun\|Pamir. made up of Precambrian,Palaeozoic,Mesozoic and Cenozoic materials overlapping northeastward the preceding unit(Qu et al.,1.96).

关键词： Yanshanian Himalayan geodynamic evolution W\|Tarim Xinjiang China